Initial work on compute_neighbors
Add new files (should have been in previous commit)
Add by-residue accumulation to md.shrake_rupley
add to whatsnew
Fix for bug
wrong factor of 3
Added support for openmm unitcells and test.
Fixes
Update sasa.py
Check for angles.
Merge pull request #607 from SimTk/xtc-bug

Fix for xtc segfault
Update whatsnew.rst
Merge MDTraj/formats/xtc/ with upstream's xdrfile-1.1.4
Update the header files too
fix language in readme
merge master
Merge pull request #605 from SimTk/sasa

[ENH] Option to accumulate SASA by residue
Merge pull request #609 from SimTk/xtc-merge-upstream

Merge MDTraj/formats/xtc/ with upstream's xdrfile-1.1.4
Merge pull request #608 from kyleabeauchamp/mmtop

[ENH] Setting unitcells in Topology.to_openmm()
Appveyor badge to point to master branch only.